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Reappraisal of Cerithiella danielsseni (Gastropoda: Caenogastropoda: Cerithiopsidae): a taxon confined to negative temperatures in the Norwegian Sea
Published online by Cambridge University Press: 03 November 2009
Abstract
Since 1993 Cerithiella danielsseni (Friele, 1877) has been regarded as a variety of C. metula (Lovén, 1846). An argument is made for reinstating C. danielsseni as a valid taxon inhabiting below-zero waters on the slope around the Nordic Seas. This conclusion is based on lack of overlap in shell morphology between specimens found below and above the ecotone where the thermocline meets the slope. Just above the ecotone and also in the Barents Sea north of ~72°N, the shelf species C. metula occurs, but with morphology slightly modified from that of the ‘typical’ form.
Keywords
- Type
- Research Article
- Information
- Journal of the Marine Biological Association of the United Kingdom , Volume 90 , Issue 4 , June 2010 , pp. 819 - 826
- Copyright
- Copyright © Marine Biological Association of the United Kingdom 2009
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